Moon enters umbra : instant of first external tangency of moon with the umbra 初亏：月球由东缘慢慢进入地影，月球与地球本影第一次外切。
2.
" moon enters umbra " - when the moon enters the earth s umbra , this is the start of partial lunar eclipse 月球刚刚和半影接触时称为半影食始月球同本影接触时称为初亏，这时月偏食开始
3.
The date showed in the table is the time for the " moon enters umbra " or the " moon enters penumbra " 如属月全食或月偏食，标明时间为初亏至复圆如属半影月食，标明时间为半影食始至半影食终
4.
" total eclipse begins " - when the moon touches the umbra internally , at this time , the moon is totally immersed in the umbra and total eclipse starts 月球同本影接触时称为初亏，这时月偏食开始当月球和本影内切时称为食既，这时月球全部进入本影，全食开始
